Anyone ever seen this on their dog?

I thought Bear just had sticky matted hair in a spot and turned out he was losing a patch and this is the result. I don't know what ringworm does in dogs but is that what this looks like? Bear is kept inside the house at all times with brief moments outside to take care of his business. The only things I've changed recently have been his food from Fromm Surf n Turf to Fromm Beef Frittata and I made him homemade treats from spent grain used to brew beer, but he had this prior to giving him those.

Re: Anyone ever seen this on their dog?

Pebbles recently had a spot that looked like that. I had read another post on here where it was mange. I got concerned and took her to the vet Monday. He did several scrapings and said it was staph, put her on cipro.

Re: Anyone ever seen this on their dog?

Reilly had those type of spots all over. he has severe outdoor allergies along with food allergies. Last time i took him to his dog dermatologist they said it was bacterial infection. he has mites and they ruled it was not mange. he has been on simplicef antibiotic for almost 2 weeks. his back is getting better but the huge hot spot on his belly is still pretty red. i recommend going to the vet and getting it tested. i hope this helps good luck!